Cited by 1,784Liver physiology and pathologyLiver Diseases and ImmunityLiver Disease Diagnosis and Treatment

Resolving the fibrotic niche of human liver cirrhosis at single-cell level

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Ramachandran, P., Dobie, R., Wilson-Kanamori, J. R., Dora, E. F., Henderson, B. E. P., Luu, N. T., Portman, J. R., Matchett, K. P. +20 more·2019·Nature

Published version of a preprint

Abstract

Liver cirrhosis is a major cause of death worldwide and is characterized by extensive fibrosis. There are currently no effective antifibrotic therapies available. To obtain a better understanding of the cellular and molecular mechanisms involved in disease pathogenesis and enable the discovery of therapeutic targets, here we profile the transcriptomes of more than 100,000 single human cells, yielding molecular definitions for non-parenchymal cell types that are found in healthy and cirrhotic human liver. We identify a scar-associated TREM2+CD9+ subpopulation of macrophages, which expands in liver fibrosis, differentiates from circulating monocytes and is pro-fibrogenic. We also define ACKR1+ and PLVAP+ endothelial cells that expand in cirrhosis, are topographically restricted to the fibrotic niche and enhance the transmigration of leucocytes. Multi-lineage modelling of ligand and receptor interactions between the scar-associated macrophages, endothelial cells and PDGFRα+ collagen-producing mesenchymal cells reveals intra-scar activity of several pro-fibrogenic pathways including TNFRSF12A, PDGFR and NOTCH signalling. Our work dissects unanticipated aspects of the cellular and molecular basis of human organ fibrosis at a single-cell level, and provides a conceptual framework for the discovery of rational therapeutic targets in liver cirrhosis.

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Crossref · 10.1038/s41586-019-1631-3

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  • In published single-cell RNA-sequencing datasets from MASH patient livers, FOXP3+ cells expressing canonical Treg transcripts such as IL2RA, CTLA4, and TNFRSF18 are present.

    “Focusing our analysis on the CD4+ T cell compartment, we identified FOXP3+ cells expressing canonical Treg cell transcripts, including IL2RA, CTLA4 and TNFRSF18 (Fig. 1D, right panel).”

    From Regulatory T cells safeguard liver health during metabolic-associated steatohepatitis (2026) · cites this paper as [22]

    Extended Data Figure 3 describes single-cell analysis of liver T cells from five healthy and five cirrhotic donors, so the paper provides a relevant T-cell dataset. It does not report FOXP3+ cells coexpressing IL2RA, CTLA4 and TNFRSF18. Its NASH analysis in Extended Data Figure 7 uses whole-liver microarray data, not a NASH-specific single-cell T-cell dataset. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • LAMs are equivalent to scar-associated macrophages (SAM) in human MASH.

    “are equivalent to the scar-associated macrophages (SAM) in human MASH (6–8)”

    From Lipid-associated macrophages' promotion of fibrosis resolution during MASH regression requires TREM2 (2024) · cites this paper as [6]

    The Results section ('Pro-fibrogenic phenotype of scar-associated macrophages'; page unavailable) reports expansion of scar-associated macrophages (SAMΦ) in patients with NASH, now termed MASH. Our copy does not identify these cells as LAMs or establish that the two populations are equivalent. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Conditioned media from TREM2+ SAM were reported to be more fibrogenic compared to their TREM2− non-scar-associated counterparts.

    “However, conditioned media from TREM2+ SAM were reported to be more fibrogenic compared to their TREM2− non-scar-associated counterparts (6).”

    From Lipid-associated macrophages' promotion of fibrosis resolution during MASH regression requires TREM2 (2024) · cites this paper as [6]

    The Results section (‘Distinct macrophage subpopulations inhabit the fibrotic niche’; page unavailable) reports that conditioned media from TREM2+CD9+ scar-associated macrophages promoted fibrillar collagen expression in human hepatic stellate cells. Extended Data Figure 10c describes tests with media from other macrophage populations, but the available text does not report that the scar-associated macrophage media was more fibrogenic than media from TREM2− counterparts. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Gpnmb, Cd9, and Fabp5 are characteristics of SAM described in humans.

    “that are characteristics of SAM described in humans (6, 7).”

    From Lipid-associated macrophages' promotion of fibrosis resolution during MASH regression requires TREM2 (2024) · cites this paper as [6]

    The Results section, “Distinct macrophage subpopulations inhabit the fibrotic niche” (page unavailable), identifies CD9 as a marker of scar-associated macrophages in human livers. Searches of our copy for GPNMB and FABP5 found no passages identifying either as a characteristic of those cells, so the three-gene claim is only partly supported. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Single-cell transcriptomics has revealed the presence of numerous subsets/states of macrophages in any given injured tissue in humans.

    “The growing accessibility of single-cell transcriptomics has also revealed the presence of numerous subsets/states of macrophages in any given injured tissue in humans (30–33).”

    From Targeting macrophages in liver fibrosis (2026) · cites this paper as [31]

    The Results section, “Distinct macrophage subpopulations inhabit the fibrotic niche,” identifies several macrophage clusters in human cirrhotic liver, including scar-associated macrophages and Kupffer cells. This supports the liver example, but this paper alone does not establish that numerous macrophage states occur in any given injured human tissue. (LLM, conf=0.87)

    Experimental — accuracy not yet measured

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Authors
Ramachandran, P., Dobie, R., Wilson-Kanamori, J. R., Dora, E. F., Henderson, B. E. P., Luu, N. T., Portman, J. R., Matchett, K. P., Brice, M., Marwick, J. A., Taylor, R. S., Efremova, M., Vento-Tormo, R., Carragher, N. O., Kendall, T. J., Fallowfield, J. A., Harrison, E. M., Mole, D. J., Wigmore, S. J., Newsome, P. N., Weston, C. J., Iredale, J. P., Tacke, F., Pollard, J. W., Ponting, C. P., Marioni, J. C., Teichmann, S. A., & Henderson, N. C.
Affiliations
  • Centre for Inflammation Research (GB)
  • University Hospitals Birmingham NHS Foundation Trust (GB)
  • Edinburgh Cancer Research (GB)
  • Wellcome Sanger Institute (GB)
  • Edinburgh Royal Infirmary (GB)
  • National Institute for Health and Care Research (GB)
  • Charité – Universitätsmedizin Berlin (DE)
  • Albert Einstein College of Medicine (US)
  • Institute of Genetics and Cancer (GB)
  • European Bioinformatics Institute (GB)
Corresponding author
  • Ramachandran, P.
  • Henderson, N. C.
Venue
Nature
Published
2019-10-09
Volume
575
Issue
7783
Pages
512-518
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2979595830
Cited by
1,784
References
98
Citations by year
2026: 306 · 2025: 319 · 2024: 293 · 2023: 286 · 2022: 220 · 2021: 221 · 2020: 131 · 2019: 7
FWCI
92.30
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • University of Birmingham Research Portal (University of Birmingham) (submittedVersion)
  • Edinburgh Research Explorer (University of Edinburgh) (submittedVersion, other-oa)
  • Queen Mary Research Online (Queen Mary University of London) (submittedVersion)
  • Bristol Research (University of Bristol) (submittedVersion)
  • Apollo (University of Cambridge) (submittedVersion)
  • Apollo
Funders
  • Wellcome Trust (RE/18/5/34216, 103749, 101067/Z/13/Z, WT206194, 103749/Z/14/Z)
  • University Hospitals Birmingham NHS Foundation Trust
  • NIHR Bristol Biomedical Research Centre
  • Cancer Research UK (22231)
  • National Institute for Health and Care Research
  • British Heart Foundation (RM/17/3/33381, RE/18/5/34216)
  • Department of Health and Social Care
  • Children's Liver Disease Foundation
  • Tenovus
  • University of Birmingham
  • University of Bristol
  • Medical Research Council (RM/17/3/33381, MC_PC_15049, MR/N008340/1, 103749, MC_PC_15075, MR/P008887/1, MC_UU_00007/15, MC_PC_15041, RE/18/5/34216, MR/N022556/1)
  • Biotechnology and Biological Sciences Research Council (BB/N018869/1, RE/18/5/34216)
  • Birmingham Biomedical Research Centre
Topics
  • Health Sciences › Medicine › Hepatology › Liver physiology and pathology
  • Health Sciences › Medicine › Hepatology › Liver Diseases and Immunity
  • Health Sciences › Medicine › Epidemiology › Liver Disease Diagnosis and Treatment
Keywords
liver cirrhosis, liver fibrosis, fibrotic niche, monocyte differentiation, collagen synthesis, TNFRSF12A, Notch signaling, non-parenchymal cells
MeSH terms
Animals, Duffy Blood-Group System, Female, Humans, Liver, Liver Cirrhosis, Macrophages, Male, Membrane Glycoproteins, Membrane Proteins, Phenotype, Receptors, Cell Surface, Receptors, Immunologic, Case-Control Studies, Cell Lineage, Receptor, Platelet-Derived Growth Factor alpha, Hepatocytes, Endothelial Cells, Mice, Hepatic Stellate Cells, Transendothelial and Transepithelial Migration, Single-Cell Analysis, Transcriptome, Tetraspanin 29

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